Method of galvanizing pipe.



N. W. BUCH.

METHODOF GALVANIZING PIPE.

APPLICATION FILED IIIIIE 23. IQIs. IIENEWED DEC. I9, I9I4.

, 9 542;, 1 5 Patented May 23, 1916.

.IIJIIIIIUIILIMIQIIVI I II l ` NEWTON W. BUCH, OF NEW CASTLE,PENNSYLVANIA. ASSTGNOR TO SAFETY ARMRITE nur caricia.

CONDUIT COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CGRPORATION 0F PENN-SYLVANIA.

METHOD F GALVANIZING PIPE.

meeste.

Specification of Letters Patent.

Application led June 23, 1913, Serial No. 775,249. Renewed December 19,1914. Serial No. 878,186.

To all 'whom may concern:

Be it known that l, Naw'roN YV. BUCH. a citizen of the United States,residing` at New Castle, Lawrence county, Pennsylvania, have invented anew and useful lmprovement in the Method of (ialvanizing y Pipe, ofwhich the following 1s a iull7 clear,

tion on the line lll-#IIT o' Fig. 1.

My invention relates to `the treatment of pipes, and isdesigned toprovide a continuous method of novel character by means of i which thework of galvanizing may be rapidly and thoroughly performed.

In carrying out my invention, T provide a suitable tank or vessel 2,which contains the bath of hot galvanizing material, and which isprovided at its ends with suitable guide rollers 3, over and betweenwhich the pipes to'be galvanized are `passed in entering and leaving thetank. vUne of the rolls 3 at the leaving end of the tank is positivelydriven by any suitable'meanssuch as the pulley 4f.

The pipes 5 to be galvanized are first provided with threaded ends andsuccessive lengths of the pipe are united by couplings 6. The tank orvessel 2 is of suilicient l length to receive a great enough length ofpipe or coupled pipes between the guide rollers to permit of thedeflection of the central portion of the pipe, below the surface ofthemolten bath. This deflection vcan be effected in part by gravity, andpartly by the use of a centrally arranged depressing wheel or roller 7.In some cases this roller may he dispensed with, as the weight of thepipe` alone will be sufficient to cause the central The. advantages ofmy invention will bc apparent to those skilled in the art, since itprovides an extremely etlicient and rapid method of galvanizing pipes.

The invention also overcomes the diliiculty whichv has heretofore been.experienced due to the rapid vaporization within the pipe of anymoisture such as remains of the vapor aid bath to which the pipes havebeen previously subjected. lt will be noted that the ends ot' theconnecting pipes passing through the bath are open to permit the freeescape of' steam and a vapor at points outside the bath. It will furtherbe noted that my invention provides means whereby the pipe couplings maybe galvanized simultaneously with the pipes. A further advantageconsists in the fact that the threaded ends ofl coated, and that nogalvanizing material can enter the interior of the pipes or couplingsduring the galvanizing operation.

It will be understood that any suitable .arrangement of apparatus otherthan that illustrated may be employed in carrying out my improvedmethod. Thus, any suitable form of tank may be employed; the pipes maybe fed through the bath by any suitable means; and the tank may bearranged so that a number of connected lengths of pipe may besimultaneously passed therew through side by side.

ing carried out in connection with hot-galvanizing, it will be readilyunderstood that my improved method is Aalso applicable toelectro-galvanizing, the pipes being con- 'nected and moved through theelectrolyte in a manner similar to that to hot-galvan izing. Theinvention is also applicable to galvanizing rods as well as pipes, andVby the term "pipes as used inthe appended claims I intend to cover thegalvanizing of successive lengths, either solid or' hollow,

when connected together in the manner deing rods or pipes havingthreaded endsrl which cpnsists in connecting successive pipe "or rodlsections together by inea-ns of couplings which inclose and protect thethreads,

TWhile I have shown my invention as bel los Ill@ and passing suchconnected Sections continuously through a coating bath and disconnectingthe coated sections after they leave the bath, substantially asdescribed.

Q. The herein described method of coating Athe exterior surfaces only ofhollow pipes,

which consists in connecting` the pipes to be coated end to end by meansof suit-able telnporary couplings which will prevent access of thecoating material to the interior of the pipes, passing the connectingpipes through a coating hath in a longitudinal direction, anddisconnecting the successive lengths of Lthe coated pipe as they leavethe bath and ".5

addingsuccessive lengths of uncoated pipe at the opposite end,substantially as described.A y

3. The herein described method of coatmelanie ln testimony Whereo'l havehereunto 39 set my lia-nd.

NEWTN W. BUCH.

Witnesses: i

RICHARD F. Denn, NEVA B. MOORE.

